QTL analysis of Cercospora leaf spot resistance in sugar beet

被引：28

作者：

Nilsson, NO

Hansen, M

Panagopoulos, AH

Tuvesson, S

Ehlde, M

Christiansson, M

Rading, IM

Rissler, M

Kraft, T

机构：

[1] Novartis Seeds AB, S-26123 Landskrona, Sweden

[2] Lund Univ, Dept Genet, S-22362 Lund, Sweden

来源：

PLANT BREEDING | 1999年 / 118卷 / 04期

关键词：

Beta vulgaris; Cercospora beticola; AFLP; marker-assisted breeding; QTL;

D O I：

10.1046/j.1439-0523.1999.00390.x

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The inheritance of Cercospora leaf spot resistance in sugar beet was investigated by means of quantitative trait loci (QTL) analysis of a segregating population of 204 individuals, using 221 AFLP and 46 restriction fragment length polymorphism (RFLP) markers. Five QTL were found through composite interval mapping on linkage groups 1, 2, 3, and 9, respectively, two of which were linked on linkage group 3. The significance of these QTL was tested by permutation analysis. The QTL had mostly additive, but also certain negative dominance effects; all the resistance alleles came from the Cercospora-resistant parent. Each quantitative trait locus accounted for 7-18% of the phenotypic variation, leaving 37% of the variation unexplained. The results are discussed in relation to the potential use of marker-assisted breeding for Cercospora leaf spot resistance in sugar beet.

引用

页码：327 / 334

页数：8

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